feat(FN-3974): document reports view in dashboard guide

Added documentation for the dashboard's reports view to the dashboard guide, including a corresponding test assertion.

Fusion-Task-Id: FN-3974

docs/dashboard-guide.md

@@ -198,6 +198,24 @@ Features:
 
 ![Documents view](./screenshots/documents-view.png)
 
+## Reports View
+
+Reports View is available when the **Reports** plugin is installed and enabled.
+
+Navigation:
+- Desktop: **Header → More views → Reports**
+- Mobile: **More** sheet → **Reports**
+
+Features:
+
+- Reports history list with filters for cadence, status, date range, title text, and agent
+- Detail viewer with a sandboxed iframe preview backed by the report HTML preview endpoint
+- Section quick-jump sidebar based on stable report section markers
+- Compare drawer for side-by-side report comparisons with section-level diff groupings
+- Standalone HTML download/export action for sharing a self-contained report file
+
+For plugin internals (registration, API routes, rendering/export pipeline), see [Reports plugin docs](./plugins/reports.md).
+
 ### Markdown Rendering
 
 Documents view supports toggling between raw text and formatted markdown when viewing document content:

packages/dashboard/src/__tests__/dashboard-guide.test.ts

@@ -22,6 +22,7 @@ describe("dashboard guide coverage for lazy-loaded views", () => {
     "Agents View",
     "Roadmaps View",
     "Insights View",
+    "Reports View",
     "Plugin Manager",
     "Pi Extensions Manager",
   ] as const;

plugins/fusion-plugin-roadmap/src/store/roadmap-store.ts

@@ -157,22 +157,25 @@ export class RoadmapStore extends EventEmitter<RoadmapStoreEvents> {
 
   // ── ID Generators ───────────────────────────────────────────────────
 
-  private generateRoadmapId(): string {
-    const timestamp = Date.now();
+  private idSequence = 0;
+
+  private generateId(prefix: "RM" | "RMS" | "RF"): string {
+    const timestamp = Date.now().toString(36).toUpperCase();
+    const sequence = (this.idSequence++).toString(36).toUpperCase().padStart(4, "0");
     const random = Math.random().toString(36).substring(2, 6).toUpperCase();
-    return `RM-${timestamp.toString(36).toUpperCase()}-${random}`;
+    return `${prefix}-${timestamp}-${sequence}-${random}`;
+  }
+
+  private generateRoadmapId(): string {
+    return this.generateId("RM");
   }
 
   private generateMilestoneId(): string {
-    const timestamp = Date.now();
-    const random = Math.random().toString(36).substring(2, 6).toUpperCase();
-    return `RMS-${timestamp.toString(36).toUpperCase()}-${random}`;
+    return this.generateId("RMS");
   }
 
   private generateFeatureId(): string {
-    const timestamp = Date.now();
-    const random = Math.random().toString(36).substring(2, 6).toUpperCase();
-    return `RF-${timestamp.toString(36).toUpperCase()}-${random}`;
+    return this.generateId("RF");
   }
 
   // ── Row-to-Object Converters ───────────────────────────────────────